Scholarlink

Abstract <p>Proton exchange membrane fuel cells have been identified as a potentially valuable technology for the efficient conversion of hydrogen energy into electrical energy. Nevertheless, one significant constraint on the performance of fuel cells is the oxygen reduction reaction (ORR). It is meaningful to progress the development of representative ORR electrocatalysts. In recent times, there has been an intensified focus on single-atom catalysts (SACs) due to the advantages of homogeneous distribution and high atom utilization efficiency. In particular, the coordination structure of metal sites plays an important role in the electrochemical performance of SACs. However, the relationship between coordination structures and catalytic performance remains unclear. In this review, we summarized the research progress on SACs in electrocatalytic ORR in recent years. Then the structure–activity relationship in the symmetric and asymmetric coordination structures of SACs was clarified. We further proposed rational design principles for regulating the coordination structure of SACs. Finally, the opportunities and challenges were discussed.</p> Graphical abstract <p><MediaObject ID="MO1"> <ImageObject Color="Color" FileRef="MediaObjects/12598_2024_3085_Figa_HTML.png" Format="PNG" Height="1182" Rendition="HTML" Resolution="300" Type="LinedrawHalftone" Width="1298" /> </MediaObject></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Principles of coordination structure design of single-atom catalysts in electrocatalytic oxygen reduction reaction

  • 期刊论文

  • 发表日期：

    2025年2月3日

查看全文
  • Shi-Hang Zhao,
  • Yuan Pan

摘要

Abstract

Proton exchange membrane fuel cells have been identified as a potentially valuable technology for the efficient conversion of hydrogen energy into electrical energy. Nevertheless, one significant constraint on the performance of fuel cells is the oxygen reduction reaction (ORR). It is meaningful to progress the development of representative ORR electrocatalysts. In recent times, there has been an intensified focus on single-atom catalysts (SACs) due to the advantages of homogeneous distribution and high atom utilization efficiency. In particular, the coordination structure of metal sites plays an important role in the electrochemical performance of SACs. However, the relationship between coordination structures and catalytic performance remains unclear. In this review, we summarized the research progress on SACs in electrocatalytic ORR in recent years. Then the structure–activity relationship in the symmetric and asymmetric coordination structures of SACs was clarified. We further proposed rational design principles for regulating the coordination structure of SACs. Finally, the opportunities and challenges were discussed.

Graphical abstract